University of Colorado

Mineral Structure Data

Titanite Group

The titanite group is composed of the minerals titanite (sphene) (CaTiSiO5) and malayaite (CaSnSiO5)

The crystal structure of titanite. 

End-Member      Titanite       Malayaite
Formula         CaTiSiO5       CaSnSiO5


Form.Wt.        196.063        266.853
Z               4              4
CrystalSystem   Mono           Mono
PointGroup      2/m            2/m
SpaceGroup      P21/a          A2/a

UnitCell        
a(Å)            7.069          7.149
b(Å)            8.722          8.906
c(Å)            6.566          6.667

beta            113.86         113.3

Vol(Å3)         370.23         389.86 

MolarVol        55.748         58.704    
Density         3.517          4.546

Thermal Expansion(Volumetric)
alpha         
a0  
a1 
a2 

Elastic Properties
Ks(GPa)        
G(Gpa)
Mineral Data Base Index

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